The issue happens because either your project (via a custom .babelrc) or one of your dependencies is relying on a es2015 preset that doesn't work with React Native. The reason for that is because it includes transform-typeof-symbol which calls babelHelpers.typeof that is not bundled with React Native.

If you have a custom babelrc - the solution is simple, just remove this preset.
Afterwards, restart packager w/o cache and you should be set.

Note: It maybe one of your dependencies that uses that preset - in such case, there's nothing you can do but try forking it and removing the preset yourself.